Table 1.
Demographic distribution of healthy controls and tuberculosis patients.
| Parameters | Cases | Controls | P value |
|---|---|---|---|
| Han population | n = 636 | n = 608 | |
| Age (mean ± SD, years) | 36.8 ± 15.7 | 37.1 ± 15.7 | 0.677 |
| Male, n (%) | 324 (50.9) | 302 (49.7) | 0.654 |
| Smoking, n (%) | 195 (69.3) | 141 (76.8) | 0.003? |
| Location of TB, n (PTB/EPTB) | 276/360 | ||
| Acid-fast bacilli stain positive, n (positive/negative) | 138/360 | ||
| Culture positive n (positive/negative) | 32/126 | ||
| TB-DNA positive n (positive/negative) | 122/133 | ||
| Tibetan population | n = 613 | n = 603 | |
| Age, (mean ± SD, years) | 34.5 ± 14.5 | 34.6 ± 13.8 | 0.909 |
| Male, n (%) | 327 (53.3) | 333 (55.2) | 0.511 |
Abbreviations: SD, standard deviation; PTB, pulmonary tuberculosis; EPTB, extra-pulmonary tuberculosis.